Merge pull request #245 from fsmanuel/rss_feed + 1

lib/foodsoft_wiki/app/controllers/pages_controller.rb

@@ -1,6 +1,14 @@
 # encoding: utf-8
 class PagesController < ApplicationController
 
+  skip_before_filter :authenticate, :only => :all
+  before_filter :only => :all do
+    authenticate_or_token(['wiki', 'all'])
+  end
+  before_filter do
+    content_for :head, view_context.rss_meta_tag
+  end
+
   def index
     @page = Page.find_by_permalink "Home"
 
@@ -114,6 +122,10 @@ class PagesController < ApplicationController
               end
       @pages.order(order)
     end
+    respond_to do |format|
+      format.html
+      format.rss { render :layout => false }
+    end
   end
 
   def version

lib/foodsoft_wiki/app/helpers/pages_helper.rb

@@ -1,6 +1,10 @@
 module PagesHelper
   include WikiCloth
 
+  def rss_meta_tag
+    tag('link', :rel => "alternate", :type => "application/rss+xml", :title => "RSS", :href => all_pages_rss_url).html_safe
+  end
+
   def wikified_body(body, title = nil)
     render_opts = {:locale => I18n.locale} # workaround for wikicloth 0.8.0 https://github.com/nricciar/wikicloth/pull/59
     WikiCloth.new({:data => body+"\n", :link_handler => Wikilink.new, :params => {:referer => title}}).to_html(render_opts).html_safe
@@ -59,4 +63,10 @@ module PagesHelper
       Array.new
     end
   end
+
+  # return url for all_pages rss feed
+  def all_pages_rss_url(options={})
+    token = TokenVerifier.new(['wiki', 'all']).generate
+    all_pages_url({:format => 'rss', :token => token}.merge(options))
+  end
 end

lib/foodsoft_wiki/app/models/page.rb

@@ -33,6 +33,24 @@ class Page < ActiveRecord::Base
       self.permalink = Page.count == 0 ? "Home" : Page.permalink(title)
     end
   end
+  
+  def diff
+    current = versions.latest
+    old = versions.where(["page_id = ? and lock_version < ?", current.page_id, current.lock_version]).order('lock_version DESC').first
+    
+    if old
+      o = ''
+      Diffy::Diff.new(old.body, current.body).each do |line|
+        case line
+        when /^\+/ then o += "#{line.chomp}<br />" unless line.chomp == "+"
+        when /^-/ then o += "#{line.chomp}<br />" unless line.chomp == "-"
+        end
+      end
+      o
+    else
+      current.body
+    end
+  end
 
   protected
 

lib/foodsoft_wiki/app/views/pages/all.html.haml

@@ -9,6 +9,7 @@
       %li= link_to t('.recent_changes'), all_pages_path(:view => 'recent_changes')
       %li= link_to t('.title_list'), all_pages_path(:view => 'title_list')
       %li= link_to t('.site_map'), all_pages_path(:view => 'site_map')
+      %li= link_to image_tag('icons/feed-icon-14x14.png', :alt => 'RSS Feed'), all_pages_rss_url
     = form_tag all_pages_path, method: :get, class: 'form-search pull-right' do
       = text_field_tag :name, params[:name], class: 'input-medium search-query',
         placeholder: t('.search.placeholder')

lib/foodsoft_wiki/app/views/pages/all.rss.builder

@@ -0,0 +1,19 @@
+xml.instruct! :xml, :version => "1.0" 
+xml.rss :version => "2.0" do
+  xml.channel do
+    xml.title FoodsoftConfig[:name] + " Wiki"
+    xml.description ""
+    xml.link FoodsoftConfig[:homepage]
+
+    for page in @pages
+      xml.item do
+        xml.title page.title
+        xml.description page.diff, :type => "html"
+        xml.author User.find(page.updated_by).display
+        xml.pubDate page.updated_at.to_s(:rfc822)
+        xml.link wiki_page_path(page.permalink)
+        xml.guid page.updated_at.to_i
+      end
+    end
+  end
+end

lib/foodsoft_wiki/foodsoft_wiki.gemspec

@@ -19,6 +19,7 @@ Gem::Specification.new do |s|
   s.add_dependency "rails", "~> 3.2.15"
   s.add_dependency 'wikicloth'
   s.add_dependency 'acts_as_versioned' # need git version, make sure that is included in foodsoft's Gemfile
-
+  s.add_dependency 'diffy'
+  s.add_dependency 'content_for_in_controllers'
   s.add_development_dependency "sqlite3"
 end

lib/foodsoft_wiki/lib/foodsoft_wiki.rb

@@ -1,5 +1,7 @@
 require 'wikicloth'
 require 'acts_as_versioned'
+require 'diffy'
+require 'content_for_in_controllers'
 require 'foodsoft_wiki/engine'
 
 module FoodsoftWiki